Hi,

I have a 1996 R70-30 Diesel/Electric truck with the same problem as many others. Starts just fine, but no drive backward or forward. wiring and hardware checked, and no problems there.

So I am looking for some help trubleshooting p.c.b boards referred in service manual as board 9A4(engine starting via generator) and 1A2(Powerboard).
If someone could point out typical issues with these boards. Or even better: could provide me with el. schematics for the cards. I would be really happy.

Best regards
Vidar (Y)